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Expired Canadian patentCanada

Drive for a variable-stroke reciprocating engine

CA 1112076 A · Owner: N.V. Philips Gloeilampenfabrieken · Inventors: Vos, Jan

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A drive for a variable-stroke reciprocating engine, comprising a rotatably journalled draft and a plate which is mounted thereon so that the plate cannot rotate with respect to the shaft during operation. The plate is journalled on the shaft so that it is rotatable about an axis of rotation which intersects the centre line of the shaft at an angle. The plate is provided with a first conical gear ring which engages a second conical gear ring provided on a bush which is arranged around the shaft. Means are provided for rotating the bush with the second gear ring with respect to the shaft.

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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Granted November 10, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 10, 1998.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 26, 1979
GrantedNovember 10, 1981
Term endedNovember 10, 1998
Patent numberCA 1112076 A
Classification (IPC)F16H15/16 +2 more

Timeline

Timeline From CIPO dates

1980198219841986198819901992199419961998Application filedApril 26, 1979Patent grantedNov 10, 1981Term endedNov 10, 1998

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.